Re: white spots on chest xray
Lots of things can show up on a chest X ray as big white spots, including breast tissue, blood vessels, lymph nodes, her heart, etcetera, etcetera, etcetera.
To give you an idea how vague chest x-rays are, imagine you had a stained glass window with intricate details, you held it up to some photo film so it would be out of focus, and then flashed a diffracting light through it, so as to make a blurry image on the photo film.
Not knowing which way the window was twisted, how blurry it was to start with, whether it was held close to or far away from the film, etcetera, it's pretty hard to pick out the colour pattern in the blurry image that results.
Now make it in black and white, and ask somebody to pick out all the panes that are stained pink.
That's about how vague chest x-ray determination can be, and that's to a trained X-ray tech, or a radiologist.
This isn't to say that your mother's not an intelligent lady, but even radiologists disagree as to what the little white spots on x-rays mean. If they're worried, they'll order further tests. It is my opinion that you should not worry until your doctor does.